Reviewer #2

As I am preparing my calculus notes for next year, the resolution of the jacobian conjecture comes at the perfect time! Today I've learned a few things surrounding this result, which i'll gather in a thread 1/n

Toutes nos félicitations à Sylvia Serfaty, lauréate du prix #Riemann 2025 🏅 La récompense lui a été décernée lors de la semaine du prix Riemann, organisée du 29 juin au 3 juillet 2026 à Varèse, en Italie. Pour en savoir plus : www.rism.it/riemann-priz...

🎉 G'MIC 4.0.0 is here — a major release focused on stability. It also opens a new chapter: fewer releases ahead, with more focus on framework robustness & performance rather than big changes. The core is mature — now we polish it. Developed @ GREYC lab (CNRS/ENSICAEN/UniCaen) ▶️ gmic.eu @cnrs.fr

This is incredible. scrollprize.org/firstscroll

An entire Herculaneum scroll has been read for the first time

PHerc. 1667, sealed since the eruption of Vesuvius in 79 AD, has been virtually unwrapped and read from beginning to end — without ever being opened.

scrollprize.org

Congratulations to Sophie Jaffard laureate of the prize Jacques Neveu from SMAI, for her phd on mathematical models of neuronal learning

Bienvenue à Nice, ville avec une des plus basses températures de France ! (ps: je recrute potentiellement un.e postdoc sur 24 mois d'ici fin 2026 sur des questions, plutôt théoriques, liées aux LLMs en post-training / alignment, je dis ça, je dis rien)

The alpha version of my new book "Optimal Transport for Machine Learners" is out, with in particular an online version with interactive figures www.gpeyre.com/ot4ml/

I’m back

Now accepted at ICML 2026! Congrats to Magamed :)

Samuel Vaiter@samuelvaiter.com · 5mo ago

🧵 New preprint! Towards Understanding Steering Strength w/ M. Taimeskhanov and D. Garreau Activation steering is a popular way to control LLM behavior at inference. But how much should you steer? We provide the first theoretical analysis of the steering strength α. 📄 arxiv.org/abs/2602.02712 1/7

While it is intuitively clear that straighter trajectories should reduce discretization error when integrating an ODE (for instance, in flow matching), I could not find a precise bound. I therefore rewrote the proof of Cauchy-Lipschitz to make this explicit. github.com/gpeyre/Discr...

PS5 beats S&P500. Rethink your investment strategy.

We hosted in Nice @aymericdieuleveut.bsky.social & A. Taylor for the SMAI-MODE 2026 mini-course on Performance Estimation Problems with 9 hours of lectures + practicals in two days All material freely available 👇 performanceestimation.github.io/Tutorial-SMA... Thanks to both of them!

🔎 Journée internationale des droits des femmes : portrait de Simona Rota Nodari, chercheuse en mathématiques au LJAD, à découvrir dans « Ces femmes qui font bouger les lignes » 👉 univ-cotedazur.shorthandstories.com/ces-femmes-q... #8mars #FemmesEnScience #UniversiteCoted'Azur #VilledeNice #CNRS

🧵 New preprint! Towards Understanding Steering Strength w/ M. Taimeskhanov and D. Garreau Activation steering is a popular way to control LLM behavior at inference. But how much should you steer? We provide the first theoretical analysis of the steering strength α. 📄 arxiv.org/abs/2602.02712 1/7

Bullshit is like entropy nowadays it can only increase.

It’s incredible that the growth rate of administrative bullshit outpaces LLM progress, but here we are.

Vu que le chauffage est visiblement un détail, on trouve des alternatives. Startup-nation 🤘

Save the date : on organise un workshop sur les maths de l'IA à Bordeaux les 4-6 novembre. N'hésitez pas ! plus on est de fous plus on rit ! (dans les limites des capacités d'accueil haha) Dates & infos : wmathsia2026.sciencesconf.org

After the 2168 series, I read @fabinou.bsky.social series on building a Quake PC fabiensanglard.net/quake_pc/ (late 90s-style), it brings back so much memories 😍!

I tested Pocket TTS from Kyutai. It's fun to use for generating French sentences: the accent is strong, but it's still perfectly understandable, even though French doesn't seem to be in the training dataset! Beyond that, the model is quite impressive especially knowing it has only 100M parameters

GitHub - kyutai-labs/pocket-tts: A TTS that fits in your CPU (and pocket)

A TTS that fits in your CPU (and pocket). Contribute to kyutai-labs/pocket-tts development by creating an account on GitHub.

github.com

Extension pour soumettre une communication : deadline au 21 janvier 23:59 !

Samuel Vaiter@samuelvaiter.com · 8mo ago

Les inscriptions aux journées MODE 2026 à Nice sont désormais ouvertes. Elles se dérouleront du 18 au 20 mars à l'Hôtel Saint-Paul. Les inscriptions sont ouvertes jusqu'au 1 mars (majoration > 9/02). La deadline pour soumettre une communication est le **15 janvier**.

Les inscriptions aux journées MODE 2026 à Nice sont désormais ouvertes. Elles se dérouleront du 18 au 20 mars à l'Hôtel Saint-Paul. Les inscriptions sont ouvertes jusqu'au 1 mars (majoration > 9/02). La deadline pour soumettre une communication est le **15 janvier**.

Mail annuel du CNRS pour savoir si tu as obtenu le prix Nobel ✅

I am at #NeurIPS2025, reach out if you want to chat!

🏅Finalist: Gradient Scarcity in Graph Learning with Bilevel Optimization, by Hashem GHANEM, Samuel Vaiter, Nicolas Keriven 5/n openreview.net/forum?id=10Y...

Happy to be at #NeurIPS in San Diego to present our poster ‘Learning Theory for Kernel Bilevel Optimization’ #3005, Fri at 4:30 p.m. Stop by/ping me to chat, especially about statistics, causality, generative models! Let's connect! Joint w/ E. Pauwels, @samuelvaiter.com, @michael-arbel.bsky.social

I have several offers for Master internships / PhDs on graph ML funded by ERC MALAGA for 2026. Don't hesitate to contact me to apply! All infos here: nkeriven.github.io/malaga/

MALAGA: Reinventing the Theory of Machine Learning on Large Graphs (ERC StG)

nkeriven.github.io

Drame : je me suis gouré de bus à Massy et là je visite *toute* la startup-nation

Est-ce que certain d'entre vous #ESR sont dans un laboratoire qui gère les missions / conférences avec un système de ticket genre GLPI ou Jira ? Si oui, est-ce que c'est l'apocalypse ou plutôt mieux qu'une gestion traditionnel ? Si non, quel niveau d'enthousiasme ou de dégout cela vous inspire ?